Hey guys,

Got an issue with my rifle. I have a Ruger Mark II Sporter in 300 WM. When I took the gun to the range I found that it was shooting all over the place. So I took it home and floated the barrel. Now it shoots much better but here is the issue. For the first two shots I can get the holes touching at 50yds. Then I take a 3rd shot and it moves about an inch away. The fourth shot will touch the 3rd shot. So it is almost like there is a shift in aim point. The two groups are about an inch away.

What could be causing this?

I'm going to shoot again this Saturday to see if it happens again. I'm going to start at 50 yds but I'm also going to shoot some at 100yds.

Thanks
Tom